parsons



s 2 Sheets-Sheet 1.

E. S. PARSONS.

NEEDLE GROOVING MACHINE.

(No Model.)

No. 386,844. Patented July 31, 1888.

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2 Sheets Sheet 2.

(No Model.)

B. S. PARSONS.

NEEDLE GROOVING MACHINE.

No. 886,844. Patented July 31, 1888.

EEEEE- M 62 fl. W

UNITED STATES PATENT OFFICE.

EMORY S. PARSONS, OE ELIZABETH, NE? JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY OF NE\V JERSEY.

NEEDLE-GROOVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 386,844, dated July 31, 1888.

(No model.)

To all whom it may concern:

Be it known that I, EMORY S. PARSONS, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in l eeclle-Grooving Machines,

of which the following is a specification, reference being had therein to the accompanying drawings.

The object of my invention is to provide an improved mechanism for inserting the needles in the needle clamp of a needle grooving machine, so that theywill be successively snpplied to the said clamp with certainty and prc- I5 cision, and any danger of failure to place a needle in the clamp at each grooving operation will thereby be avoided. To this end I provide the needlecarriageon which the neodle holder or magazine is mounted, with a push-pin or plunger which follows the movements of the said carriage during the backward movement of the latter, and then retreats still fart-her to allow a needle to come in front of it. To force a needle from the magazine 2 into the clamp, the pin moves quickly forward and pushes the needle before it into the clamp. The backward movement of the pin with the needle-carriage (the said pin remaining in a forward position relative to said carriage) prevents the needles in the holder or magazine on the said carriage from being pushed forward by the weight-operated follower until the point of the needle to be next placed in the clamp will clear the shank of the needle already in the clamp.

In the drawings, Figure 1 is a plan view, partly in horizontal section, ofa needle-grooving machine embodying my invention; and Fig. 2 is a side elevation thereof.

This needle-grooving machine is, in its general features, of we1l-known form, and is familiar to those skilled in the art to which my invention relates, and need not therefore be herein particularly described, excepting so far 5 as is necessary to an understanding of the op eration of my invention. Moreover, the general construction and operation of this machine are fully described in the application of L. B. Miller, filed simultaneously herewith,

and to which reference may be bad, if desired.

A denotes the frame of the machine; B, the driving-shaft; B and B, fast and loose driving-pullcys thereon; O, the cam-shaft having a worm-wheel, c, meshing with a worm, I), on 5 the shaft B, said shaft 0 also carrying the cams c c and c.

D and D are the ncedlecarriages sliding in ways on the frame A, and having pins or roller studs extending downward into the grooves of the cams c and c, the said cams thus serving to impart positive back and forth feeding movements to the said carriages.

Secured to the needle-carriage I) is a laterally-extending arm, d, which is adapted to 6 serve as a needle holderor magazine by being provided with a suitable groove (denoted by the dotted line, Fig. 1) to receive the shanks of a row of needles to be arranged therein, as shown. The said arm has another groove, d, 7c which intersects the needle holding groove, and in which is placed a follower, d running over a pulley, d, and provided with a weight,

(i to hold the follower against the needles, so that they will be fed up automatically to be brought successively into line with a feedingpin, 1), to be forced into the clamp of the needle-carriage I).

The needle-grooving cutters c are carried by suitably-operated vertical shafts E, connected together by the gears c. The clamp to hold the needles while being grooved c011- sists of a block or anvil, d, on the carriage D, and a lever, D", having aclamping-foot,d, the said lever being hinged at its rear end to a block or standard on said carriage. The clamping lever is forced downward in the usual manner by a roller-carrying follower (see dotted lines, Fig. 2) operated by a cam on the transverse shaft G, and is lifted, when the said cam permits, to allow a needle to be removed or inserted by a spring, d

The shank or spindle p of the needle-feeding push-pin 1) is guided in suitable bearings in the carriage D, and the pin itself is guided 5 in a sleeve or block, p extending from said carriage into the needle-holder d. The spindle carrying the pin 19 is attached at its rear end to a slide, 19, guided in the block a. and connected to a lever, P, pivoted at its lower end to abracket, a", depending from the frame A, the said lever being operated by the cam 0 on the shaft 0 and a retracting-spring, 1), and the said spring Serving to hold a pin or roller (see dotted lines, Fig. 2) on the said lever in contact with the face of the said cam.

The upper end of the lever P will have a much greater throw than the cam by which it is operated, owing to the fact that the said lever is pivoted at i s lower end, and the cam acts thereon between its fulcrum and its upper or free end.

In the operation of the machine the clamp carriage D approaches to within thelength of the shank of a needle of the needle-holder car riage D, and the push-pin p isthen quickly advanced to force a needle into the clamp of the said carriage D, the clampingfoot cl be ing momentarily held raised for this purpose after the removal of the needle just grooved, but being again quickly forced into clamping position to hold the needle inserted beneath it. The carriage D" now advances, presenting the needle to the grooving cutte'rs e in the usual manner, and the carriage D retreats. During the backward movement of the carriage D the pin follows the movements thereof, and thus remains in a forward position, as shown in Fig. 1, relative to the needleholder, so as to prevent the needlesin the said holder from being moved up by the follower (2 until the p int of the needle next to be grooved will clear the shank'of the needle at ready in the clamp. The pin 19 then retreats to permit the follower to force up the needles, one of which will then be in front of the said pin, and when the needlecarriages have again approached to within the proper distance of each other (thecarriage D moving forward and the carriage D backward) the pin is operated, as before, to force another needle into the clamp of the carriage D. Thus the oper ation continues, the pin 19 forcing the needles into the clamp at the proper times and at other times preventing them from interfering with the needles in the clamp,which would be liable to cause a displacement or confusion of the needles in the holder or magazine.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. In a needle-grooving machinethe com bination, with the needle carriage D and the needle holder or magazine carried thereby, of a needle-feeding push-pin arranged to slide longitudinally in said carriage, and actuating mechanism for said pin, to operate substantially as set forth.

2. In a needle-grooving machine, the com- I bination, with the needle-carriage D and the needle holder or magazine d, carried thereby, of the needle-feeding pushpinp, sliding longitudinally in said carriage, the shank orspindle p, by which the said pin is carried, the slide 1;, the lever P, the cam c, and the spring 12, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EMORY S. PARSONS.

Witnesses:

L. B. MILLER, L. L. BURRI'IT. 

